Disclosed are methods of forming foam comprising: (a) providing a foamable composition comprising an isocyanate, a polyol and a physical blowing agent comprising at least about 50% by weight of hydrohaloolefin, including trans1233zd, and wherein the polyol comprises a polyol or mixture of polyols such that the hydrohaloolefin, including trans1233zd, has a solubility in said polyol of less than about 30%; and (b) forming a foam from said foamable composition.

Described herein is a Low TVOC flame-retardant polyurethane spray foam system, including at least one isocyanate as isocyanate component, and at least one substance reactive toward isocyanate, chain extender and/or crosslinking agent, flame retardant, blowing agent, catalysts, and additives and/or auxiliaries, as resin components, where the flame retardant includes expandable graphite and melamine, the amount of expandable graphite is in the range of from 5 wt % to less than 30 wt %, and the amount of melamine is in the range of from greater than 5 wt % to 30 wt %, each based on the total weight of the resin components. Also described herein are a polyurethane spray foam produced therefrom, the preparation thereof, and a method of use thereof in the application of heat insulation, sound insulation, cavity filling and damping packing.

Process for preparing rigid polyurethane or urethane-modified polyisocyanurate foams from polyisocyanates and polyfunctional isocyanate-reactive compounds in the presence of blowing agents wherein the polyfunctional isocyanate-reactive compounds comprise an unmodified or modified novolac polyol and a polyether polyol having a hydroxyl number of between 50 and 650 mg KOH/g obtained by reacting a polyfunctional initiator first with ethylene oxide and subsequently with propylene oxide wherein the propoxylation degree is between 0.33 and 2 mole propylene oxide per active hydrogen atom in the initiator and wherein the molar ratio of ethylene oxide to propylene oxide in said polyether polyol is at least 2.

Foam composites and methods of preparation thereof are discussed. For example, the foam composite may include a polymeric material and a particulate filler, wherein the compressive strength of the foam composite is equal to or greater than 20 psi, the density is 4 pcf to 40 pcf, and wherein the thermal conductivity is equal to or less than 0.050 W/m K. the particulate filler may include fly ash, e.g., in an amount of about of 45% to about 75% by weight with respect to the total weight of the foam composite. The foam composite may be prepared from a mixture of a polyol, an isocyanate, the particulate filler, and a liquid blowing agent having a boiling point equal to or greater than 25° C. or 30° C.

Low-scorch flame-retardant polyurethane foams include phosphorus-containing propionic ester flame retardants. Methods for producing and using the foams are also provided.

The invention pertains generally to a process and a composition-of-matter for a shelf-stable open cell polyurethane HFO-blown two-component polyurethane foam composition having improved flame-retardant properties through the use of at least one organo-tin containing catalyst and at least one potassium containing catalyst; and at least one dimorpholino-based ether catalyst, a ratio of the at least one potassium-containing catalyst to the tin-containing catalyst being at least approximately 1.5:1.0, the at least one surfactant comprising a polydimethylsiloxane (PDMS) backbone and polyethylene oxide-co-propylene oxide (PEO-PPO) random copolymer grafts; and the added water comprises at least 8 weight percent of said B-side reactants, the polyurethane foam having a Class B rating with a flame spread between 25 and 75 inclusive and a smoke developed of under 450 using ASTM E 84 testing protocol.

A foaming assistant material and a foam-molding method, which can achieve the functions of a nucleating agent, a dispersant, and the like sufficiently so that the cells can have smaller diameter, the mixing of foreign substances is prevented, and so on, and can produce the high-quality foam-molded article, are provided. The foaming assistant material is kneaded together with a raw material pellet and the mixture is subjected to the foam molding. The foaming assistant material is a pellet obtained by adding inorganic particles, a chemical foaming agent, and a dispersant to a dilution resin. An antioxidant may be added further to the dilution resin. In the foam-molding method, inorganic particles, a chemical foaming agent, a dispersant, and an antioxidant are added to a raw material resin at the same time in a state that the inorganic particles, the chemical foaming agent, the dispersant, and the antioxidant are mixed in advance.

A thermoset foam comprises from 0.2 to 4.0 wt. % of at least one aliphatic brominated polyether polyol, from 2.0 to 7.0 wt. % of at least one aromatic brominated polyester polyol, and from 2.0 to 7.5 wt. % of at least one flame retardant comprising organo-phosphate, organo-phosphonate, or organo-phosphite, wherein the ratio of the amount of aliphatic bromine expressed as a percentage of total bromine to the amount of aromatic bromine expressed as a percentage of total bromine is from 10:90 to 50:50.

A foam molding composition containing a fluororesin (A) and a compound (B) having a pyrolysis temperature of 300° C. or higher and a solubility parameter (SP value) of 8 to 15. Also disclosed is a foamed electric wire including a core wire, and a fluororesin layer or a fluororesin composition layer covering the core wire, a foam molded body, a method for producing a foam molded body, and a method for producing an electric wire.

The present invention refers to a flame retardant comprising a complex formed by phosphine oxide and transition metal salt, wherein has good flame retardant property. The present invention also refers to a composite flame retardant and flame retardant antistatic composition, wherein composite flame retardant comprise the flame retardant and the inorganic flame retardant component as described above, which has an enhanced flame retardant effect; said flame retardant antistatic composition, comprising above described flame retardant or composite flame retardant and carbon nanofiber antistatic agent, wherein carbon nanofiber antistatic agent could have interaction with flame retardant, effectively reducing the amount of flame retardant, and the combination with the flame retardant without the adverse effect of each other which result in negative performance of each other, does not influence the subsequent foaming process and the foam structure and physical properties. The present invention also further refers to a flame resistant method, which adds the abovementioned flame retardant, composite flame retardant or flame retardant antistatic composition into the material, so that said material has flame retardance or flame retardance and antistatic, and has excellent mechanical properties.